Index: branches/main/admin/interface/version.php
===================================================================
--- branches/main/admin/interface/version.php	(revision 17)
+++ branches/main/admin/interface/version.php	(revision 18)
@@ -48,6 +48,6 @@
 
 // check if defined to avoid errors during installation (redirect to admin panel fails if PHP error/warnings are enabled)
 if(!defined('VERSION')) { define('VERSION', '2.10.1-dev'); }
-if(!defined('REVISION')) { define('REVISION', '17'); }
+if(!defined('REVISION')) { define('REVISION', '18'); }
 if(!defined('SP')) { define('SP', ''); }
 
Index: branches/main/modules/output_filter/filters/filterRelUrl.php
===================================================================
--- branches/main/modules/output_filter/filters/filterRelUrl.php	(revision 17)
+++ branches/main/modules/output_filter/filters/filterRelUrl.php	(revision 18)
@@ -33,7 +33,7 @@
 /* Original SP7 Manu Fix */
             // restore canonical relation links
             $sContent = preg_replace_callback(
-                '/<link\s[^>]*?\"canonical\"[^>]*?>/isU',
+                '/<link\s[^>]*?\"(canonical|alternate)\"[^>]*?>/isU',
                 function($aMatches) use ($sDocRoot) {
                     return preg_replace(
                         '/(href\s*=\s*\")([^\"]*?)/siU',